add ME Suite PRO image and option to the dropdown

spec/features/guest_account_signup_spec.rb

@@ -1,6 +1,13 @@
 require "rails_helper"
 
 feature "Guest account sign up" do
+  scenario "guest can select ME Suite PRO in 'interested in' dropdown" do
+    visit new_account_path
+
+    expect(page).to have_selector("img[src*='ME_PRO_black']")
+    select "ME Suite PRO", from: interested_in_product_dropdown
+  end
+
   scenario "creates a new account and signs in successfully" do
     visit new_account_path
 
@@ -38,4 +45,10 @@ feature "Guest account sign up" do
 
     expect(page).to have_content "Sign Up"
   end
+
+  private
+
+  def interested_in_product_dropdown
+    "user[interested_product_name]"
+  end
 end